Construction method for raft plate basic high-precision overall pre-embedded large-diameter bolt group structure

Abstract

The invention relates to a raft plate basic high-precision overall pre-embedded large-diameter bolt group structure. The structure is characterized in that the structure comprises an upper-layer positioning plate, a lower-layer positioning plate, a bottom support seat, pre-embedded foundation bolts, connecting bolts, fine-adjustment bolts and leveling bolts; unit positioning steel plates are connected and assembled through node plates and the bolts to respectively form the upper- and lower-layer positioning plates, the pre-embedded foundation bolts are disposed between the upper- and lower-layer positioning plates, the pre-embedded foundation bolts and the upper-layer positioning plate are connected through the fine-adjustment bolts, the pre-embedded foundation bolts is in anchor connection with the lower-layer positioning plate; and the leveling bolts are disposed between the lower-layer positioning plate and the bottom support seat to perform connection, and the bottom support seat and a concrete cushion are connected through the pre-embedded bolts. The bolt group structure can perform three-dimensional dynamic adjustments on the pre-embedded bolts, ensures accuracy of center coordinates and scale heights of the bolts, achieves high-precision pre-embedment of a bolt group, and has a good economic technical benefit. The invention further provides a construction method for the raft plate basic high-precision overall pre-embedded large-diameter bolt group structure.

Description

technical field [0001] The invention relates to a construction method for a high-precision integral pre-embedded large-diameter bolt group structure of a raft foundation. The utility model belongs to the field of foundation treatment and is suitable for high-precision pre-embedded installation and construction of raft foundations of buildings. Background technique [0002] At present, the installation of power transmission substations, nuclear power plants, and various large-scale industrial equipment, including steel structure workshops, is increasing. Various foundations, especially embedded bolts for equipment foundations, are widely used. Compared with traditional buildings, the embedded bolts of such buildings There are many bolt specifications, large quantities, and high installation accuracy requirements. Once a large deviation occurs in individual bolts in the bolt group, it will directly affect the normal installation and debugging of various equipment, and it is mo...

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